Software Systems researches new programming and modeling languages, development methods and environments for large software-intensive systems, with a focus on web based and dependable systems, where communication and concurrency are pervasive. Sample application scenarios we are particularly interested in include web based applications (e.g., business apps, social networks), service infrastructures (e.g., app-stores, multi-party services / mashups), and ubiquitous computing infrastructures, such as smart buildings. Our work bridges from foundational theoretical principles to prototype development, experimental validation, and ultimately to technology and knowledge transfer.